I wonder how the theory is supposed to explain RIM and Nokia's great success in the past. Are we supposed to ignore that because they're failing now? No success lasts forever, and Apple and Google too shall pass.

Apple and Google weren't even in the field during Rim and Nok's best years. If they had never entered, it's possible Rimm and Nok would still be the top dogs now.

I don't mean to say 'all' the best are... just 'many'. There are top developers everywhere and I hope I didn't imply otherwise. And I am not in California now myself (and certainly not an 'sv type').